21901270

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128831}}^1$

素因数の和:128855

約数の個数: 16

約数和(自身を含む): 41741568

約数和(自身を除く): 19840298

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 128831, 257662, 644155, 1288310, 2190127, 4380254, 10950635, 21901270]

約数ペア:

[(1, 21901270), (2, 10950635), (5, 4380254), (10, 2190127), (17, 1288310), (34, 644155), (85, 257662), (170, 128831)]